Spring damping means for valve mechanism



E. W. OHRT- SPRING DAMPING MEANS FOR VALVE MECHANISM- APPLICATION FILEDJULY 31.1919.

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.Emz'Z W. izrt, by I At ar'nzy,

EMIL w. OHR'I, or nnmsncx, IOWA.

SPRING DAMIPING MEANS non vAL'vn MECHANISM.

To all whom it may oncern,-

Be it known that I,EMIL W. OHRT, a citizen of the United States ofAmerica, and a resident of Reinbeck, Grundy county, Iowa, have inventedcertain new and useful Improvements in Spring Damping Means I for ValveMechanism, of which the followsuflicient distances to allow is aspecification.

y invention relates to improvements in spring ,damping-means forvalve-mechanism, and particularly to the valve-operating means forinternal-combustion engines of the type employed on self-propelledvehicles, and the object of my improvement 18 to supply yieldableresilient means for creating tensions upon different parts of rocker- Iarms as associated movably with other elements of valve-operating means,to take up lost motion, keep such parts in proper working relations, andprevent unpleasant rattling and noises which would be otherwisecaused'by and due to the motions of the vehicle.

This object I have accomplished by the means which arehereinaftendescribed and claimed, and which are illustrated in theaccompanying drawings, in which Figure l is a transverse verticalsection through the upper part of an internal-combustion engine, withthe valve-operating means iuelevatmn, and my improved springdamping-means applied thereto; Fig. 2 is an elevation of thevalve-operating means and said damping means, as viewed at an angle ofninety degrees from the elevation shown in said Fig. 1, and Fig. 3 is aperspective view of the spring damping-means alone.

In said drawings, similar numerals of reference denote correspondingparts throughout the several views.

The internal-combustion engine 8 is shown with a'standard or bracket 9detachably secured thereto by the hexagonal headed screws 17, and has awidened top part 18 supplied with a longitudinal bore to receive apintle 11, the ends of the latter pro ecting of mounting of the pair ofrocker-arms 10 thereon.

End-parts 10 of said rocker-arms are enlarged and vertically bored toloosely re ceive the upper extremities of the cam-rods 13, cone-nuts 16on said rods being engaged with said parts 10 to rock the latterupwardly in the usual manner.

The opposite parts 14 of said rocker-arms are also terminally widenedsuitably to en- Specification of Letters latent.

Application filed m $1, 1919. Serial No. 314,448.-

' arm member 10 to be held to Patented Aug. 10, 1920.

made of a single integral body, but may be composed of associateddetachably-connected or contacted parts in its operating members.

The device is formed from and tempered to provide curved springmembers 3and 6, both integrally extending at a right-angle from each other withtheir unction circularly enlarged at 1 and provided with an orifice 2.

The arm or member 3 has a circularly enlarged bearing-head 4 providedwith an orifice 5, and the outer endof the other spring-member 6 isshaped into a fork 7 opening upwardly.

' In practice, these spring-dampers are applied to both rocker-a3:18,215 shown in said Fig. 2. The junction t of each device is secured tothe engine by passing the stem of the screw 17 through its orifice 2,the head of the screw holding tightly in place. The adjacent and of thepintle 11 is passed through the or ice 5 in the spring-member 1, theslit-key l2 securing the latter which bears against the boss 19 of theadjacent rocker-arm, whereby the pair of said springarms create oppositeand coacting tensions to keep the rocker-arms in contact with thesupporting bracket-head 18, taking up any looseness 1n the parts due towear, and pre- -venting rattling and noises.

The forks 7 of the other spring-members 6 pass upwardly about andreceive the abutting parts of the rocker-arm parts 14:, creating anupward tension thereupon, which in turn causes the extremity of theother rockeritsscat upon the cam-rod nut 16, thus preventing lostmotionthere with incident noises.

As the valve-operating parts shown are subject to much wear and quicklyget to rattling while the'vehicle is in rapid motion, my device obviatesthe inconveniences which would otherwise be caused thereby.

Having described my invention, what l claim as new, and desire to secureby Letters Patent, is:

1. In combination, supporting-means, rocker-arms mounted on oppositesides thereof, and like spring tension-devices having like membersbearing upon the rocker metal shaped arms to exert opposite tensionsthereon to keep them in contact with said supportingmeans, and alsohaving like members hearing uponand engaged With like extremities of therocker-arms at one side to exert tensions thereon in a certaindirection.

2. The combination with supportingmeans, and a rocker-arm mediallymounted thereon, of a spring-device comprising integrallyconnectedspring-arms extending 10 Signed at Waterloo, Iowa, this 14th day 15 ofJuly, 1919.

Ei/iiL W. OHRT.

